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9d50b468a1
This patch adds an ability to convert JSON-encoded data into a hierarchy of Go's native data types. R=rsc CC=golang-dev https://golang.org/cl/161060
93 lines
2 KiB
Go
93 lines
2 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package expvar
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import (
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"json";
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"testing";
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)
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func TestInt(t *testing.T) {
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reqs := NewInt("requests");
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if reqs.i != 0 {
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t.Errorf("reqs.i = %v, want 4", reqs.i)
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}
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if reqs != Get("requests").(*Int) {
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t.Errorf("Get() failed.")
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}
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reqs.Add(1);
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reqs.Add(3);
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if reqs.i != 4 {
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t.Errorf("reqs.i = %v, want 4", reqs.i)
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}
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if s := reqs.String(); s != "4" {
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t.Errorf("reqs.String() = %q, want \"4\"", s)
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}
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}
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func TestString(t *testing.T) {
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name := NewString("my-name");
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if name.s != "" {
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t.Errorf("name.s = %q, want \"\"", name.s)
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}
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name.Set("Mike");
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if name.s != "Mike" {
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t.Errorf("name.s = %q, want \"Mike\"", name.s)
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}
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if s := name.String(); s != "\"Mike\"" {
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t.Errorf("reqs.String() = %q, want \"\"Mike\"\"", s)
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}
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}
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func TestMapCounter(t *testing.T) {
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colours := NewMap("bike-shed-colours");
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colours.Add("red", 1);
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colours.Add("red", 2);
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colours.Add("blue", 4);
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if x := colours.m["red"].(*Int).i; x != 3 {
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t.Errorf("colours.m[\"red\"] = %v, want 3", x)
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}
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if x := colours.m["blue"].(*Int).i; x != 4 {
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t.Errorf("colours.m[\"blue\"] = %v, want 4", x)
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}
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// colours.String() should be '{"red":3, "blue":4}',
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// though the order of red and blue could vary.
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s := colours.String();
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j, err := json.Decode(s);
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if err != nil {
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t.Errorf("colours.String() isn't valid JSON: %v", err)
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}
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m, ok := j.(map[string]interface{});
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if !ok {
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t.Error("colours.String() didn't produce a map.")
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}
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red := m["red"];
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x, ok := red.(float64);
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if !ok {
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t.Error("red.Kind() is not a number.")
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}
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if x != 3 {
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t.Error("red = %v, want 3", x)
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}
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}
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func TestIntFunc(t *testing.T) {
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x := int(4);
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ix := IntFunc(func() int64 { return int64(x) });
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if s := ix.String(); s != "4" {
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t.Errorf("ix.String() = %v, want 4", s)
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}
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x++;
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if s := ix.String(); s != "5" {
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t.Errorf("ix.String() = %v, want 5", s)
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}
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}
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